package com.heima.wemedia.service.impl;

import cn.hutool.core.bean.BeanUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmLoginDto;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.model.wemedia.vos.WmUserVo;
import com.heima.utils.common.AppJwtUtil;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmUserService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

@Service
public class WmUserServiceImpl extends ServiceImpl<WmUserMapper, WmUser> implements WmUserService {
    private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(WmUserServiceImpl.class);

    @Override
    public ResponseResult<Map<String, Object>> login(WmLoginDto dto) {
        // 1.检查参数
        if (StringUtils.isBlank(dto.getName()) || StringUtils.isBlank(dto.getPassword())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "用户名或密码为空");
        }

        // 2.查询用户
        WmUser wmUser = lambdaQuery().eq(WmUser::getName, dto.getName()).one();
        if (wmUser == null) {
            log.warn("用户【{}】登录密码错误", dto.getName());
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }

        // 3.比对密码
        String salt = wmUser.getSalt();
        String owd = dto.getPassword();
        owd = DigestUtils.md5DigestAsHex((owd + salt).getBytes());
        if (!owd.equals(wmUser.getPassword())) {
            log.info("用户【{}】密码错误", dto.getName());
            return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
        }

        // 4.返回jwt
        String token = AppJwtUtil.getToken(wmUser.getId().longValue());
        Map<String, Object> map = new HashMap<>();
        map.put("token", token);

        // 4.1 转换vo
        WmUserVo wmUserVo = BeanUtil.copyProperties(wmUser, WmUserVo.class);
        map.put("user", wmUserVo);
        log.info("用户：{}，登录成功", wmUser.getName());
        return ResponseResult.okResult(map);
    }
}